The Unity Tactical FAST FTC 30MM Magnifier in Flat Dark Earth features a compact 2.20-inch length and is specifically designed to mount on Picatinny rails using a FAST QD lever. This magnifier promotes quicker sight picture acquisition compared to standard height mounts, enhancing reticle visibility while wearing head protection or night vision equipment.Key FeaturesMount Type: Compatible with Picatinny Rail and FAST QD Lever for secure attachment.Optical Centerline Height: Features a 2.26-inch optical centerline height for improved reticle visibility.